窗体绑定类，利用反射将实体类和控件绑定

using System; using System.Web; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Reflection; //========================== //author:Dy //date:20080329 //========================== namespace BLL { /// <summary> /// 说明： 利用反射将业务对象和控件绑定 /// 本类有两个静态方法 <see cref="BindObjectToControls"/> 和 <see cref="BindControlsToObject"/> /// 用来绑定控件值或对象属性 <see cref="Control"/> /// 控件ID 要和 业务对象属性名称 相同 /// /// </summary> public class FormBinding { /// <summary> /// 绑定对象属性 的值到同名控件 <see cref="Control"/> /// </summary> /// <param name="obj">属性要绑定窗体控件的对象</param> /// <param name="container">控件容器 通常是Page 页面 </param> public static void BindObjectToControls(object obj, Control container) { if (obj == null) return; // 得到业务对象属性 // Type objType = obj.GetType(); PropertyInfo[] objPropertiesArray = objType.GetProperties(); foreach (PropertyInfo objProperty in objPropertiesArray) { Control control = container.FindControl(objProperty.Name); // 列表控件 (DropDownList, CheckBoxList, RadioButtonList) // if (control is ListControl) { ListControl listControl = (ListControl)control; foreach (ListItem lItem in listControl.Items) { lItem.Selected = false; } string propertyValue = objProperty.GetValue(obj, null).ToString(); string[] s = propertyValue.Split(','); foreach (string i in s) { ListItem listItem = listControl.Items.FindByText(i); if (listItem != null) listItem.Selected = true; } } else if (control != null) { // 得到控件属性 // Type controlType = control.GetType(); PropertyInfo[] controlPropertiesArray = controlType.GetProperties(); // // 测试通用属性 bool success = false; success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool)); if (!success) success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime)); if (!success) success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String)); if (!success) success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String)); if (!success) success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "InnerHtml", typeof(String)); } } } /// <summary> /// 查找控件属性和类型并尝试给业务对象同名属性赋值 /// </summary> /// <param name="obj">已找到属性的对象</param> /// <param name="objProperty">已找到对象 的 属性</param> /// <param name="control">控件ID和业务对象属性名匹配的控件</param> /// <param name="controlPropertiesArray">控件属性集合</param> /// <param name="propertyName">要设置的控件属性名称</param> /// <param name="type">控件属性类型校正</param> /// <returns>属性是否被找到并设置</returns> private static bool FindAndSetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type) { // 遍历控件属性 // foreach (PropertyInfo controlProperty in controlPropertiesArray) { // 检查属性名称和类型 // if (controlProperty.Name == propertyName && controlProperty.PropertyType == type) { // 设置控件属性的值到业务对象 // controlProperty.SetValue(control, Convert.ChangeType(objProperty.GetValue(obj, null), type), null); return true; } } return false; } /// <summary> /// 设置控件 <see cref="Control"/>s值到业务对象 /// </summary> /// <param name="obj">要绑定的业务对象</param> /// <param name="container">控件容器</param> public static void BindControlsToObject(object obj, Control container) { if (obj == null) return; // 获取业务对象属性 // Type objType = obj.GetType(); PropertyInfo[] objPropertiesArray = objType.GetProperties(); foreach (PropertyInfo objProperty in objPropertiesArray) { Control control = container.FindControl(objProperty.Name); if (control is ListControl) { ListControl listControl = (ListControl)control; string str=""; if (listControl.SelectedItem != null) for (int i = 0; i < listControl.Items.Count; i++) { if (listControl.Items[i].Selected) { str += listControl.Items[i].Text+","; } } objProperty.SetValue(obj, Convert.ChangeType(str, objProperty.PropertyType), null); } else if (control is HtmlInputHidden) { try { HtmlInputHidden hidControl = (HtmlInputHidden)control; //hidControl.Value = hidControl.Value==""?"0":hidControl.Value; objProperty.SetValue(obj, Convert.ChangeType(hidControl.Value, objProperty.PropertyType), null); } catch { } } else if (control is HtmlInputText) { try { HtmlInputText txtControl = (HtmlInputText)control; //txtControl.Value = txtControl.Value==""?"0":txtControl.Value; objProperty.SetValue(obj, Convert.ChangeType(txtControl.Value, objProperty.PropertyType), null); } catch { } } else if (control != null) { // 获取控件属性 // Type controlType = control.GetType(); PropertyInfo[] controlPropertiesArray = controlType.GetProperties(); // 尝试通用属性 // bool success = false; success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool)); if (!success) success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime)); if (!success) success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String)); if (!success) success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String)); } } } /// <summary> /// 查找控件值并尝试赋值给同名业务对象属性 /// /// </summary> /// <param name="obj">待赋值的业务对象</param> /// <param name="objProperty">业务对象属性</param> /// <param name="control">同名控件</param> /// <param name="controlPropertiesArray">控件数组</param> /// <param name="propertyName">得到的控件属性名称</param> /// <param name="type">控件属性类型</param> /// <returns>属性是否找到</returns> private static bool FindAndGetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type) { // 遍历控件属性 // foreach (PropertyInfo controlProperty in controlPropertiesArray) { // 检查名称和类型 // if (controlProperty.Name == propertyName && controlProperty.PropertyType == typeof(String)) { // 控件赋值给业务对象 // try { Object ctrValue = Convert.ChangeType(controlProperty.GetValue(control, null), objProperty.PropertyType); objProperty.SetValue(obj, ctrValue, null); return true; } catch { // // 没有找到控件对应的业务对象属性 return false; } } } return false; } } }

实体类的属性和控件的id命名一致既可以了

调用时

     赋值,实体类给控件赋值：BLL.FormBinding.BindObjectToControls(model, this);//model为实体类。

     取值，控件的值赋给实体类：BLL.FormBinding.BindControlsToObject(model, this);

一句话完成取值和赋值。